I too would prefer a Democrat-majority court, but this isn't the way to do it, and sets a very dangerous precedent. This verges on tyranny and is against what the Founding Fathers intended. This is unwise and will blow up in the face of the Dems. If this would pass it could be the worst US policy decision since the Iraq War.
Thankfully Biden doesn't seem on board nor is Nancy Pelosi, at least they're still sane. The chances are nil for this passing, and Biden could likely have a veto.